This application is very good tool for student , engineer and technical people to get all information for the cone to make it by using flat steel , aluminum or copper sheet...etcBy this app you can get :-1- Cone angle as the diameter and height are given.2- Detailed drawing for the flat sheet needed to make this cone .3- The area of this flat sheet of the cone.As a great improvement we add the following features 1 - The flat pattern becomes dynamic and real.2 - Adding sheet thickness.3 - Adding the cylinder.4 - Export the flat pattern file at your mobile5 - Export the flat pattern as picture (jpg) then you can print it.6 - Export the flat pattern as dxf file , then you can open it by any CAD program like Acad.7 - You can use the dxf file to cut the sheet by laser machine or CNC machine.1- Fix a bug2- New free app is added to the drawer